/*
BEGIN LICENSE BLOCK
Copyright 2010-2011, Heiko Mueller, Sam Lindley, James Cheney and
University of Edinburgh
This file is part of Database Wiki.
Database Wiki is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Database Wiki is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Database Wiki. If not, see <http://www.gnu.org/licenses/>.
END LICENSE BLOCK
*/
package org.dbwiki.data.query;
import org.dbwiki.data.database.Database;
import org.dbwiki.data.resource.NodeIdentifier;
import org.dbwiki.exception.data.WikiQueryException;
/** A QueryStatement that fetches the data associated with a node id.
* FIXME #query: Make this more modular
* @author jcheney
*
*/
public class NIDQueryStatement extends QueryStatement {
/*
* Private Variables
*/
private Database _database;
private int _nodeID;
/*
* Constructors
*/
public NIDQueryStatement(Database database, String nodeHexID) throws org.dbwiki.exception.WikiException {
//
// Expects a node identifier in hexadecimal integer format
//
_database = database;
try {
_nodeID = Integer.decode("0x" + nodeHexID);
} catch (java.lang.NumberFormatException exception) {
throw new WikiQueryException(WikiQueryException.InvalidNIDQuery, nodeHexID);
}
}
/*
* Public Methods
*/
public QueryResultSet execute() throws org.dbwiki.exception.WikiException {
return new QueryResultSet(_database.get(new NodeIdentifier(_nodeID)));
}
}